<template>
    <div>

        <div id="slider" class="mui-slider">
            <div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
                <div class="mui-scroll">
                    <a :class="['mui-control-item',item.id == 0?'mui-active':'']" v-for="item of cates" :key="item.id" @click="getPhotoListByCateId(item.id)">
                        {{item.title}}
                    </a>
                </div>
            </div>

        </div>

        <!-- 图片列表区域 -->
        <ul class="photo-list">
            <router-link :to="'/home/photoinfo/'+item.id" v-for="item in list" :key="item.id" tag="li">
                <img v-lazy="item.img_url">
                <div class="info">
                    <h1 class="info-title">{{item.title}}</h1>
                    <div class="info-body">{{item.zhaizhao}}</div>
                </div>
            </router-link>
        </ul>
    </div>
</template>
<script>
//  禁止caller  callee 严格模式
//   1. 安装插件
//       cnpm install babel-plugin-transform-remove-strict-mode -D
//   2. .babelrc文件配置
//        plugins:[“transform-remove-strict-mode”]
import mui from "../../libs/mui/js/mui.min.js";
export default {
  data() {
    return {
      cates: [], //所有分类的列表数据
      list: [] //图片列表的数据
    };
  },
  created() {
    this.getAllCategory();
    this.getPhotoListByCateId(0);
  },
  mounted() {
    //必须在mounted之后初始化
    mui(".mui-scroll-wrapper").scroll({
      deceleration: 0.0005 //flick 减速系数， 系数越大，滚动速度越慢，默认值0.0006
    });
  },
  methods: {
    //获取所有的图片分类
    getAllCategory() {
      this.$http
        .get("getImageCategory")
        .then(result => {
          console.log(result);
          result.body.unshift({ title: "全部", id: 0 });
          this.cates = result.body;
        })
        .catch(err => {});
    },
    getPhotoListByCateId(id) {
      console.log(id);
      //根据分类ID 获取图片列表
      this.$http.get("getPhotoListByCateId?id=" + id).then(result => {
        console.log(result.body);
        this.list = result.body;
      });
    }
  }
};
</script>
<style lang="scss" scoped>
* {
  touch-action: pan-y;
}

.photo-list {
  list-style: none;
  margin: 0;
  padding: 10px;
  padding-bottom: 0;
  li {
    position: relative;
    background-color: #ccc;
    text-align: center;
    margin-bottom: 10px;
    box-shadow: 0 0 9px #999;
    img {
      width: 100%;
      vertical-align: middle;
    }
    img[lazy="loading"] {
      width: 40px;
      height: 300px;
      margin: auto;
    }
    .info {
      text-align: left;
      position: absolute;
      bottom: 0;
      color: white;
      width: 100%;
      background-color: rgba(0, 0, 0, 0.4);
      max-height: 84px;
      .info-title {
        font-size: 14px;
      }
      .info-body {
        font-size: 13px;
      }
    }
  }
}
</style>
